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authorDan McGee <dan@archlinux.org>2011-04-07 16:14:48 -0500
committerDan McGee <dan@archlinux.org>2011-04-07 17:03:06 -0500
commitd7665959652171b93db5e084c6738e8e1773e7f0 (patch)
tree33437565060f5b3c37660330d11f90230c5f8908 /news
parent01db07bad844e17e084f650b6732647f77a91c5c (diff)
Add some migrations to convert database to UTC time
This follows the earlier commit where we make sure any value going to or being pulled from the database is UTC. Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'news')
-rw-r--r--news/migrations/0009_utc_datetimes.py85
1 files changed, 85 insertions, 0 deletions
diff --git a/news/migrations/0009_utc_datetimes.py b/news/migrations/0009_utc_datetimes.py
new file mode 100644
index 00000000..6cddf783
--- /dev/null
+++ b/news/migrations/0009_utc_datetimes.py
@@ -0,0 +1,85 @@
+# encoding: utf-8
+import datetime
+from south.db import db
+from south.v2 import DataMigration
+from django.db import models
+from django.utils.tzinfo import LocalTimezone
+
+def new_date(old_date, reverse=False):
+ if old_date is None:
+ return None
+ tz = LocalTimezone(old_date)
+ offset = tz.utcoffset(old_date)
+ if reverse:
+ offset = -offset
+ return old_date - offset
+
+class Migration(DataMigration):
+
+ def forwards(self, orm):
+ all_news = orm.News.objects.all().defer('content')
+ for news in all_news:
+ # prevents full object updates
+ orm.News.objects.filter(pk=news.pk).update(
+ postdate=new_date(news.postdate),
+ last_modified=new_date(news.last_modified))
+
+ def backwards(self, orm):
+ all_news = orm.News.objects.all().defer('content')
+ for news in all_news:
+ # prevents full object updates
+ orm.News.objects.filter(pk=news.pk).update(
+ postdate=new_date(news.postdate, True),
+ last_modified=new_date(news.last_modified, True))
+
+ models = {
+ 'auth.group': {
+ 'Meta': {'object_name': 'Group'},
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+ 'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+ },
+ 'auth.permission': {
+ 'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+ 'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+ 'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+ },
+ 'auth.user': {
+ 'Meta': {'object_name': 'User'},
+ 'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+ 'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+ 'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+ 'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+ 'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+ 'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+ 'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+ 'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+ 'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+ 'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+ },
+ 'contenttypes.contenttype': {
+ 'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+ 'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+ 'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+ },
+ 'news.news': {
+ 'Meta': {'ordering': "['-postdate']", 'object_name': 'News', 'db_table': "'news'"},
+ 'author': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'news_author'", 'to': "orm['auth.User']"}),
+ 'content': ('django.db.models.fields.TextField', [], {}),
+ 'guid': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+ 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+ 'last_modified': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'}),
+ 'postdate': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'}),
+ 'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '255', 'db_index': 'True'}),
+ 'title': ('django.db.models.fields.CharField', [], {'max_length': '255'})
+ }
+ }
+
+ complete_apps = ['news']